Gate.



W. A. CRAWFORD-FROST.

GATE.v

APPLICATION FILED 111111.24. 1912.

Patented June 2, 1914.

uLUMlM Punoclun CaJV/MMINGTON D l:

WILLIAM A. CRAWFORD-FROST, 0F BALTIMORE, MARYLAND.

GATE.

Speccation of Letters Patent.

Application filed February 24, 1912.

Patented J une 2, 1914. serial No. 679,632.

T0 all whom it may concern.'

Be it known that I, WILLIAM A. CRAW- FORD-FROST, a citizen of the United States, residing at Baltimore city, State of Maryland, have invented new and useful Improvements in Gates, of which the following is a specification.

This invention relates to gates and .more particularly to rotary gates.

The object of the invention is to provide a simple and ellicient device of this character which will be automatically operated upon the release of suitable controlling slots to open and close the passage when said stops are operated.

Further objects of this invention will appear as the following specific description is read in connection with the accompanying drawing, which forms a part of this application, and in which Figure 1 is a perspective view. Fig. 2 is a sectional view on the line 2 2 of Fig. 1. Fig. 3 is a vert-ical sectional view taken through the supporting post.

Referring more particularly to the drawing, 1 represents a supporting post which is centrally positioned in the passage way 2 defined by the ends of the fences 3 and 1. Mounted upon this post is a sleeve or top 5 and, if found desirable, the sleeve may contain a bearing 6 which rests upon the upper end of the post 1 having an interposed antifriction member 7. The sleeve is normally rotated in one direction by a spiralspring 8 which is connected to the sleeve at one end and to the post at the opposite end.

Extending outwardly in diametrically opposite directions from the sleeve are gate panels 9 and 10 which are adapted when positioned, as shown in Fig. 1, to close the passage way 2. These panels are carried by and rotated with the sleeve, as will be clearly understood, and may be constructed in any suitable manner. They are here shown as comprising a rectangular frame, the sides of which are connected by suitable cross wires or members.

In order to hold the gate in closing or opening position, suitable stops 11 and 12 are provided. These stops are in the nature of pivoted dogs having a weight 13 at one end and being pivoted intermediate their length upon suitable standards 14C. The opposite end of the stop 11 is connected t0 operating cables 15 and 16, the former of `which passes over a pulley 17 and through an underground tube 18 to its point of exit where it passes over a similar pulley 19 and through guides 20 carried upon a standard 21. The upper portion of the standard is provided with a T-head 22 having pulleys 23 thereon to receive the cable. The depending end of the cable is provided with a handle 211, the operation of which will act upon the cable to withdraw the stop 11 from the path of the gate. The other cable 16 passes in a similar manner to a standard 25 and has its terminal end provided with an operating handle 26. The handle 24.- is located to the right of the post 1 while the handle 26 is located to the left of the passage, thereby conveniently positioning these members for operation by drivers of outgoing and incoming vehicles.

When the stop 11 is removed from the path of the gate, the spring S will act to rotate the same and bring the panel opposite the one released against the stop 12. In order to release this stop, the same is connected to a cable 27 which passes over pulleys through an underground tube 28. After passing from the tube 28 the cable extends through guides 29 on the T-head and terminates in an operating handle 30 at the left hand of the post. A similar cable 31 is also connected with the stop 12 and extends upon the opposite side of the gate through guides on the T-head of the post 25 and terminates in an operating handle 32 at the right hand side of the post.

In the operation of the device, a person desiring to go out through the' passage would pull upon the handle 24; which would release the stop 11. The gate would rotate under the influence of the spring until brought to a stop by the stop 12. After the person has passed through the gate the operating handle 32 would be pulled, which would withdraw the stop 12 from the path of the gate which would again rotate under the influence of the spring until stopped by the dog 11 which has been returned to normal by action of the weight thereon. When the spring has lost its tension it is wound up by turning the gate in a reverse direction.

What is claimed is 1. In, a gate, the combination with a pivoting post, ofi a sleeve rotatably mounted thereon, gate panels carried by and extended from opposite sides of the sleeve, a spring connecting the sleeve and post for normally rotating the sleeve in one direction, and means to stop the gate at predetermined points in its rotation.

2. A road gate including a post located in the center of the road, a sleeve closed at its upper end and loosely surrounding said post, a bearing provided in the sleeve and at the closed end thereof, said bearing rotatably mounted upon said post, a Winding spring encircling the post and having one end connected thereto, the other end of said spring connected to said sleeve, gate panels carried by and projecting from opposite Sides of the sleeve7 said spring adapted to rotate said sleeve in one direction, and means to stop the gate at predetermined points in its rotation.

3. A road gate including a post located in the center of the road, a sleeve closed at its upper end and loosely surrounding said post, a bearing provided in the sleeve and at the closed end thereof, said bearing rotatably mounted upon said post, a Winding spring encircling the post and having one end connected thereto7 the other end of said spring connected to said sleeve, gate panels carried by and projecting from opposite sides of the sleeve, said Spring adapted to rotate said sleeve in one direction and retractable means to stop the gate at predetermined points in its rotation.

In testimony whereof l al'lix my signature in presence of tWo Witnesses.

WILLIAM A. CRAWFORD-FROST. fitnesses VILLIAM E. SCHUL, GEORGE W. MANLY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

